Converting Little Endian to Big Endian

user_183717 0
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All,

I have been practicing coding problems online. Currently I am working on a problem statement Problems where we need to convert Big Endian <-> little endian. But I am not able to jot down the steps considering the example given as: 

123456789 converts to 365779719

The logic I am considering is :
1 > Get the integer value (Since I am on Windows x86, the input is Little endian)
2 > Generate the hex representation of the same.
3 > Reverse the representation and generate the big endian integer value

But I am obviously missing something here.

Can anyone please guide me. I am coding in Java 1.5

portability java
7 Answers

Java primitive wrapper classes support byte reversing since 1.5 using reverseBytes method.

Short.reverseBytes(short i)
Integer.reverseBytes(int i)
Long.reverseBytes(long i)

Just a contribution for those who are looking for this answer in 2018.

user_63621850

Just use the static function (reverseBytes(int i)) in java which is under Integer Wrapper class

Integer i=Integer.reverseBytes(123456789);
System.out.println(i);

output:

365779719
user_143668850
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